Forbes contributors publish independent expert analyses and insights. I write about physics, science, academia, and pop culture. This article is more than 8 years old. When I woke up Sunday morning, ...

Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens. of ...

Exploiting a novel technique called phase discontinuity, researchers have induced light rays to behave in a way that defies the centuries-old laws of reflection and refraction. The discovery has led ...

Answer 3 is correct. You see the same no matter how far back you go. This may seem counter-intuitive. We've all checked our reflection before going out, and it seems natural that to see our whole body ...

I will never contain the whole of it, he said, the mirror too small for the long-necked lamp floating swan-like near the angle of incidence. Never, he said, stepping back from the lectern and ...